Forced subtitles are subtitles that included in commercial Blu-ray and partial DVD movies so as to provide a better visual experience to display the translation text when a foreign or alien language is spoken, or a sign in different language is shown.

Why we back up Blu-ray movies with forced subtitles?

Known as one of the newest and most featured optical disc storage media, Blu-ray disc is widely accepted by video enthusiasts for its efficiency and video quality. As you know, Blu-ray movies do not always include one language. Chances are that two or more languages are spoken in one movie. If your blu-ray movie contains more than one language and you go without subtitles when backing up blu-ray to Mac Computer, you'll possibly fail to understand the lines that are spoken in foreign languages. And that's why we'd better back up blu-ray movies with forced subtitles when there are multiple languages spoken in the blu-ray movies.

How to extract Forced subtitles only when ripping blu-ray movies to Mac HDD under OS X Lion (10.7)?

The forced subtitle is embedded into one of the streams and you have to get it out and remix it to the video. The process could be very complicated. Here I would introduce you an easiest way keeping forced subtitles when ripping blu-ray to Mac. Along with some help from third-party software. For the hardware side of things, Other World Computing has a variety of Blu-ray solutions for all Macs. When it comes to getting the raw content of a Blu-ray disc onto your hard drive, Pavtube Blu-ray Ripper for Mac OS X Lion is about as good as it gets. Specially designed for Blu-ray video zealots who use Mac OS including Mac OS X Leopard (10.5), Snow Leopard (10.6), Lion (10.7), the Bluray Ripper for OS X Lion is the Blu-ray ripper that can achieve all kinds of Blu-ray ripping tasks. Of course, the program can easily extract subtitles from blu-ray discs and DVDs for you. Below is a guide on how to do a blu-ray backup with forced subtitles:

Before conversion you require a Mac with external BD drive and download/install a free trial of the Blu-ray Ripper for Mac OS X Lion. Here we go with the Blu-ray Ripping with forced subtitles process.

Step 1. Run and load your Blu-ray (or DVD) movie to the top Mac Lion Blu-ray Ripper. Here I take the Blu-ray movie Avatar for example, in which a foreign language "Navi" is spoken.

(The Blu-ray Ripper for Mac above is an old version)

Step 2. Set Forced Subtitles for chapters you want to rip.

By default no subtitle is set. Select a chapter and click play button, you'll find there are no subtitles when previewing. Set Forced subtitles for each chapter follow this way: specify a language as your English in "Subtitle" pull-down list, and check "Only show force subtitle" before converting Avatar to hard drive, The Blu-Ray Rippping Tool for Mac OS X Lion can extract forced subtitles from blu-ray discs and DVDs for you. Then the subtitle appears on the screen only when foreign languages other than English are spoken.

Avatar movie with English Forced Subtitle (English subtitle is included only Navi language is spoken):

Step 3. Specify output format.

The program allows users to rip blu-ray movies to MKV, AVI, MP4, WMV, TS, MOV, M4V, etc of up to 1080p HD quality. Just click "Format" bar to set a desired format.

Designed for fast speed and negligible video quality loss, this amazing software is your best choice for Blu-ray ripping on Mac computer. It also enables you to copy Blu-ray disc contents without any quality loss by removing Blu-ray copy protections, such as the newest MKB V28. In order to bring you unforgettable visual experience, the OS X Lion Blu-ray Ripper also allows you to adjust video effect with its powerful editing tools. You can utilize them to trim video for your needed length, crop video to get rid of annoying black edges, join multiple video clips into one and add text/image watermark to personalize the video according to your needs. You can even set the specific device profile since the software has a long list of supported portable devices including but not limited to iPod, iPhone, iPad, PSP, Xoom (Convert bluray to Motorola Xoom on Mac), Nook Tablet (Rip a Blu-ray for playback with Nook Tablet), Galaxy Tab 10.1(Get Blu-ray movies on Galaxy Tab 10.1), BlackBerry phone, Archos, Apple TV, Droid 3, Toshiba Thrive, Asus Transformer(Watch Blu-ray on Eee Pad Transformer), and more.